Patent application number | Description | Published |
20080225718 | Systems and Methods for Providing Global Server Load Balancing of Heterogeneous Devices - The present invention provides improvements to load balancing by providing a load balancing solution that distributes a load among a plurality of heterogenous devices, such as different types of local load balancers, using metrics collected from the different devices. The load balancing appliance collects metrics from heterogenous devices using a network management protocol and communication model, such as a Simple Network Management Protocol (SNMP). These heterogenous device metrics are available on the load balancing appliance with appliance determined metrics and metrics obtained by the appliance from homogenous devices using a metric exchange protocol. Via a configuration interface of the appliance, a user can select one or more of these different metrics for global load balancing. As such, the load balancing appliance described herein obtains a multitude of metrics from the different devices under management. Additionally, the load balancing appliance described herein provides great flexibility in allowing the user to configure the global load balancer based on the user's understanding of these multitudes of metrics and to take into account the different characteristics and behaviors of the heterogenous devices. | 09-18-2008 |
20090187654 | SYSTEMS AND METHODS FOR MONITORING COMPONENTS OF A REMOTE ACCESS SERVER FARM - The present application is related methods to monitor a state of one or more components of a remote access server farm by an intermediary to distinguish between operating and functional components and improve farm availability for user application requests. The intermediary may be deployed between a client and the remote access server farm and forwards client requests to functional components of the remote access server farm. | 07-23-2009 |
20090307351 | SYSTEMS AND METHODS FOR MONITORING COMPONENTS OF A REMOTE ACCESS SERVER FARM - The present application is related methods to monitor a state of one or more components of a remote access server farm by an intermediary to distinguish between operating and functional components and improve farm availability for user application requests. The intermediary may be deployed between a client and the remote access server farm and forwards client requests to functional components of the remote access server farm. | 12-10-2009 |
20100036951 | SYSTEMS AND METHODS FOR DYNAMIC DECENTRALIZED LOAD BALANCING ACROSS MULTIPLE SITES - A method for enabling decentralized dynamic load balancing among a plurality of appliances providing access to a plurality of sites, each site comprising a local area network and at least one server includes: determining, by a first appliance, a first number of services currently available for access via a local area network connected to the first appliance; receiving, by the first appliance from a second appliance, a communication indicating a second number of services currently available for access via a local area network connected to the second appliance; receiving, by the first appliance, a plurality of requests to connect to a service; determining, by the first appliance, a weight to be assigned to the second appliance, wherein the determination is responsive to the second number; and forwarding, by the first appliance to the second appliance, a subset of the plurality of requests, wherein the number of requests comprising the subset is determined in response to the determined weight. Corresponding systems are also described. | 02-11-2010 |
20100046546 | SYSTEMS AND METHODS FOR PROVIDING DYNAMIC SPILLOVER OF VIRTUAL SERVERS BASED ON BANDWIDTH - The present solution provides a spillover management technique for virtual servers of an appliance based on bandwidth. A network administrator may configure a bandwidth threshold for one or more virtual servers, such as virtual servers providing acceleration or load balancing for one or more services. The bandwidth threshold may be specified as a number of bytes transferred via the virtual server. The bandwidth threshold may also be specified as a round trip time or derivative thereof. A user may specify the bandwidth threshold via a configuration interface. Otherwise, the appliance may establish the bandwidth threshold. The appliance monitors the bandwidth used by a first virtual server. In response to detecting the bandwidth reaching or exceeding the bandwidth threshold, the appliance dynamically directs client requests to a second virtual server. | 02-25-2010 |
20100191851 | METHOD AND APPLIANCE FOR USING A DYNAMIC RESPONSE TIME TO DETERMINE RESPONSIVENESS OF NETWORK SERVICES - In a method and appliance for determining responsiveness of a service via a particular protocol, a device intermediary to a plurality of clients and a plurality of services determines response times from each of a plurality of services to respond to requests via a first type of protocol of a plurality of protocols. The device calculates an average response time for the first type of protocol from each of the response times of the plurality of services. The device establishes a predetermined threshold for which a response time of a service for the first type of protocol may deviate from the average response time. The device identifies a service as available responsive to determining that a deviation of the response time of the service from the average response falls within the predetermined threshold. | 07-29-2010 |
20120005334 | SYSTEMS AND METHODS FOR MONITORING COMPONENTS OF A REMOTE ACCESS SERVER FARM - The present application is related methods to monitor a state of one or more components of a remote access server farm by an intermediary to distinguish between operating and functional components and improve farm availability for user application requests. The intermediary may be deployed between a client and the remote access server farm and forwards client requests to functional components of the remote access server farm. | 01-05-2012 |
20130318232 | SYSTEMS AND METHODS FOR PROVIDING DYNAMIC CONNECTION SPILLOVER AMONG VIRTUAL SERVERS - A method for an appliance to switch handling of transport layer connection requests from a first virtual server of the appliance managing a first plurality of services to a second virtual server of the appliance managing a second plurality of services upon exceeding, by the first virtual server, a maximum connection threshold determined dynamically from a status of the first plurality of services The appliance establishes a predetermined threshold identifying a maximum active transport layer connection capacity for the first virtual server that comprising a sum of a predetermined connection capacity for each of the plurality of services. The appliance determines via monitoring that the status of a service of the plurality of services indicates the service is not available and adjusts the predetermined threshold to comprise the sum of the predetermined connection capacity for each of the plurality of services having a status of available. | 11-28-2013 |